The human rights organisation Amnesty International has accused both sides in the Israeli-Palestinian conflict of targeting children.
"Children are increasingly bearing the brunt of this conflict," the London-based organisation says in a report published on Monday.
"Both the Israeli Defence Force and Palestinian armed groups show an utter disregard for the lives of children and other civilians," it adds.
The report says more than 250 Palestinians under 18 years of age, and over 70 young Israelis have been killed during the two-year Palestinian uprising.
In the latest incident on Monday, a teenage Palestinian boy was killed by machine-gun fire in the West Bank city of Nablus as Israeli tanks moved into a refugee camp, according to Palestinian sources.